LINCOLN, Neb. — Exactly one day after he retired from a 36-year military career, Col. Tom Brewer announced plans to engage in a new battle. He wants to take on a fellow Republican and incumbent congressman.

Brewer, who’s been called Nebraska’s most battle-tested soldier, may have followed military orders for nearly four decades, but if elected to the U.S. House, he says he won’t always toe the GOP line.

He supports expanding Medicaid and questions the wisdom of building the proposed Keystone XL oil pipeline across Nebraska, for example, and bluntly says he’s disappointed not only with the man he’s trying to unseat, 3rd District U.S. Rep. Adrian Smith, but all three of Nebraska’s congressmen.